login.aspx.cs

来自「一个功能完善的论坛系统,有数据库备分,希望对你有所帮助」· CS 代码 · 共 115 行

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Configuration;
namespace bbs.Components
{
	/// <summary>
	/// Login 的摘要说明。
	/// </summary>
	public class Login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label labLoginName;
		protected System.Web.UI.WebControls.TextBox txtLoginName;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected System.Web.UI.WebControls.Label labPWD;
		protected System.Web.UI.WebControls.TextBox txtPWD;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
		protected System.Web.UI.WebControls.Button btnLogin;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.Button btnCancel;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!IsPostBack)
			{
				if(Request.UrlReferrer==null)
				{
					ViewState["UrlReferrer"] ="/bbs/default.aspx";
				} else
				{
				
					ViewState["UrlReferrer"]= Request.UrlReferrer.ToString();
				}
			}
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.btnLogin.Click += new System.EventHandler(this.btnLogin_Click);
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnLogin_Click(object sender, System.EventArgs e)
		{
			if(IsValid) 
			{
				UsersDB login=new UsersDB();
				int intResult=login.Login(txtLoginName.Text,txtPWD.Text);
				if (intResult<0)
				{
					if(intResult== -1)
					{
						Response.Write("<script>");
							 Response.Write("alert('没有这个用户')");
							 Response.Write("</script>");
						
					} 
					else
					{
						Response.Write("<script>");
						Response.Write("alert('密码错误')");
						Response.Write("</script>");
						
					}
				} else
				{
					Session["UserID"]=login.GetUserID(txtLoginName.Text);
					Session["UserName"]=txtLoginName.Text;
					Session["LoginState"]=1;
					Response.Redirect((string)ViewState["UrlReferrer"]);
				}
			}
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
		  Response.Redirect((string)ViewState["UrlReferrer"]);
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
		Response.Redirect("register.aspx");
		}

		

		
	}
}